[Sheriff] Revert "New object attributes to disambiguate description sources"

This reverts commit 80e972425d5b8c543aa934d8afce64e4d8e5aeda.

Reason for revert: Suspected to cause a11y tree failures, https://ci.chromium.org/ui/p/chromium/builders/ci/Win7%20Tests%20(1)/116006/overview

Original change's description:
> New object attributes to disambiguate description sources
>
> NVDA screen reader team has asked for some changes to how descriptions
> are exposed in IAccessible2 so that they don't have to automatically
> announce tooltips, while still announcing other annotations.
>
> New object attributes:
> * "description" now reflects aria-description, but not other description
>   sources. This matches what Firefox does now.
> * "description-from" has one one the following values:
>   - "aria-description"
>   - "aria-describedby"
>   - "ruby-annotation"
>   - "summary"
>   - "table-caption"
>   - "tooltip" (either via @title or aria-describedby + role="tooltip")
>   - "button-label" (when the name was from something else)
>
> The above may require future tweaks but has been agreed to in principle
> with NVDA and Mozilla.
>
> Bug: 1194991
> Change-Id: Ie20486e569b6f892e85c143119d1eea4d91efaf7
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2799998
> Commit-Queue: Aaron Leventhal <aleventhal@chromium.org>
> Auto-Submit: Aaron Leventhal <aleventhal@chromium.org>
> Reviewed-by: Will Harris <wfh@chromium.org>
> Reviewed-by: Dominic Mazzoni <dmazzoni@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#871966}

Bug: 1194991
Change-Id: I34b222fe6ebcebbf788b8e1825f8920d2d8b00d0
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2825893
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Owners-Override: Anatoliy Potapchuk <apotapchuk@google.com>
Auto-Submit: Anatoliy Potapchuk <apotapchuk@google.com>
Cr-Commit-Position: refs/heads/master@{#872385}
66 files changed
tree: b4e3259c9b4e92ae23c841983151d94041407c21
  1. android_webview/
  2. apps/
  3. ash/
  4. base/
  5. build/
  6. build_overrides/
  7. buildtools/
  8. cc/
  9. chrome/
  10. chromecast/
  11. chromeos/
  12. cloud_print/
  13. codelabs/
  14. components/
  15. content/
  16. courgette/
  17. crypto/
  18. dbus/
  19. device/
  20. docs/
  21. extensions/
  22. fuchsia/
  23. gin/
  24. google_apis/
  25. google_update/
  26. gpu/
  27. headless/
  28. infra/
  29. ios/
  30. ipc/
  31. jingle/
  32. media/
  33. mojo/
  34. native_client_sdk/
  35. net/
  36. pdf/
  37. ppapi/
  38. printing/
  39. remoting/
  40. rlz/
  41. sandbox/
  42. services/
  43. skia/
  44. sql/
  45. storage/
  46. styleguide/
  47. testing/
  48. third_party/
  49. tools/
  50. ui/
  51. url/
  52. weblayer/
  53. .clang-format
  54. .clang-tidy
  55. .eslintrc.js
  56. .git-blame-ignore-revs
  57. .gitattributes
  58. .gitignore
  59. .gn
  60. .vpython
  61. .vpython3
  62. .yapfignore
  63. AUTHORS
  64. BUILD.gn
  65. CODE_OF_CONDUCT.md
  66. codereview.settings
  67. DEPS
  68. DIR_METADATA
  69. ENG_REVIEW_OWNERS
  70. LICENSE
  71. LICENSE.chromium_os
  72. OWNERS
  73. PRESUBMIT.py
  74. PRESUBMIT_test.py
  75. PRESUBMIT_test_mocks.py
  76. README.md
  77. WATCHLISTS
README.md

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